What does the 'a' in electronic handbrake mean?

[ParkerLynn]

Electronic handbrake's 'a' stands for autohold, which is an automatic parking system. After activating the autohold system, you don't need to shift into neutral or pull the handbrake when waiting at a red light, as the car will remain stationary without rolling. When the light turns green, stepping on the accelerator pedal will make the car move forward. This system is particularly suitable for urban roads with frequent traffic lights. The electronic handbrake is a technology that achieves parking braking through electronic control. Its working principle is the same as that of a mechanical handbrake, both relying on the friction generated between the brake disc and brake pads to control parking braking. The only difference is that the control method has changed from the traditional mechanical handbrake lever to an electronic button.